The 1973 Swiss League Cup was the second Swiss League Cup competition.
It was played in summer 1973 as a pre-season tournament to the 1973–74 Swiss football season.
It was won by Grasshopper Club Zürich who defeated FC Winterthur 5–4 on penalties after a 2–2 draw in the final.
The final took place on 10 October 1973 at Letzigrund in Zürich.